100 domain test enrichment
No hidden fees

You don't know when customers trial competitors, add new tools to their stack, or start evaluating alternatives until they tell you in the renewal call, or until they've already decided to leave.
Your health scores show usage drops after churn risk has started. By the time quarterly reviews flag problems, customers are already trialing your competitors. You need leading indicators, not retrospective reports.
Your customers are using competitors in other regions, product categories, or teams, but you don't see it. Real expansion opportunities are hidden in subscription data you don't have access to.
See when existing customers trial your competitors, add new tools to their stack, or show switching behavior. These subscription signals appear 3-6 months before renewal conversations, giving you time to intervene.
MarketSizer shows where your customers use competitors in other regions, product categories, or teams. Bring expansion conversations backed by evidence: "We see you're using Competitor XY in EMEA but our solution in North America. Let's talk consolidation."
Subscription signals appear before usage metrics decline or engagement scores drop. When customers trial alternatives, you know immediately, not in next quarter's review. Intervene early when retention is still possible.
When CS spots churn risk (customer trialing competitors), Sales sees the same account flagged. When expansion signals appear (customer using competitors in new regions), Marketing can support with targeted campaigns. Everyone works from the same qualified opportunities.



Enrich accounts in bulk via CRM/Clay/List upload, or enrich one at a time on websites, LinkedIn or prospecting tools like Apollo.
Surface real-time subscription changes, competitor trials, switching activity, and tech stack context.
Rank accounts by ICP Match, Purchase Intent, and Win Predictor so you focus on in-market accounts you're likely to win.
Get recommended actions (which role/title to engage, how to position, and when timing is right) to win, grow and retain accounts (automations coming soon).


MarketSizer shows when existing customers trial your competitors, add new tools to their stack, or show switching behavior; signals that appear 3-6 months before renewal conversations. This gives CS teams time to intervene when retention is still possible, not after the decision is made.
Yes. MarketSizer ranks your customers by churn risk (based on competitive trial activity and renewal timing) and expansion potential (based on where they use competitors in other regions or categories). You focus on high-impact accounts instead of spreading effort evenly.
MarketSizer tracks where your customers use competitors in other regions, product lines, or teams. This reveals untapped expansion opportunities backed by evidence. You can bring data-driven recommendations to QBRs: 'You're using us in Region A but Competitor XY in Region B. Here's why consolidation makes sense.'
Absolutely. MarketSizer offers native CRM integrations with Zoho CRM, HubSpot CRM, Freshworks CRM, and Salesforce CRM. We also integrate with Clay.com, Make.com, n8n, Latenode, and Zoho Flow, and we provide a MarketSizer API for custom workflows so signals appear in the tools your team already uses.
Most CS teams start seeing churn and expansion signals within days. Competitive trial alerts, renewal risk indicators, and cross-sell opportunities populate immediately, letting you build proactive retention and expansion plays into your workflow right away.